I am a man of size in the belly and manage to get in and out of 5K fine when I go to BKK. Even when I was drunk.

I had an aisle seat back in August and it was fine, in fact I think I may prefer aisle as it feels the cabin crew can easily ignore you in the window seats. I didn't notice the other person stepping over me.

I've been to BKK in February, March, April, August and December and it always seems busy flights. Every time coming back passengers in WTP get downgraded and have signs at check in asking for volunteers to go next day! And I know of WTP passengers even being transferred to Thai Air economy too.